Over the years, I’ve seen rumor after rumor that Apple would eventually abandon Intel chips in favor of ARM chips. And time after time, I’ve refuted those arguments, saying that a Mac running ARM processors is not likely to happen anytime soon.

But maybe I’m wrong. Former Apple executive Jean-Louis Gassée — himself a longtime skeptic of Apple’s transition to ARM chips for its desktop and laptop computers — says he’s recently been convinced, and even believes that Apple could release ARM-based Macs as soon as 2016.

Apple hasn’t updated the Mac Pro significantly since 2010, much to the dismay of professional Mac users. That’s why there’s keen interest in the future Mac Pro: Apple has reiterated its committment to the beefy desktop powerhouse, yet it’s the only Mac to not undergo a major redesign in the last couple of years. Eager eyes look to the future of the Mac Pro line to see what’s next.

A new series of concept images by Peter Zigich have been doing the rounds today, and they are getting a lot of buzz. The images describe a Mac Pro that isn’t just significantly smaller and more power efficient than the existing Mac Pro, but that eschews Intel’s server-class CPUs in favor of custom-built A-series chips.

Darrell Etherington over at Techcrunch says that while “obviously a flight of pure fancy, ” Zigich’s concept is “one that takes serious the question of what comes next for the standalone desktop PC in a mobile-first world.”

It does nothing of the sort. Zigich’s concept isn’t just a flight of fancy, it’s nonsense. Here’s why.